The crystallisation of a solute from a solution may be done by________________?
Correct answer: B. All A., B. & C.
- A. Removal of pure solvent by evaporation
- B. All A., B. & C.
- C. Changing the nature of the system by the addition of a more soluble material
- D. Change of temperature thereby causing super-saturation
Explanation
Crystallisation requires creating supersaturation, which can be achieved by evaporating solvent, cooling the solution, or adding another substance that changes the solubility conditions. Hence all three listed methods can promote crystallisation.
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